Device Type: LLDP-MED Devices are comprised of two
primary Device Types - Network Connectivity Devices and Endpoint Devices.
LLDP-MED Network Connectivity
Device Definition
LLDP-MED Network
Connectivity Devices, as defined in TIA-1057, provide access to the IEEE 802
based LAN infrastructure for LLDP-MED Endpoint Devices. An LLDP-MED Network
Connectivity Device is a LAN access device based on any of the following
technologies:
-
IEEE 802.1
Bridge
-
IEEE 802.3
Repeater (included for historical reasons)
-
IEEE 802.11
Wireless Access Point
-
LAN
Switch/Router
-
Any device
that supports the IEEE 802.1AB and MED extensions defined by TIA-1057 and can
relay IEEE 802 frames via any method
LLDP-MED Endpoint Device
Definition
LLDP-MED Endpoint
Devices, as defined in TIA-1057, are located at the IEEE 802 LAN network edge,
and participate in IP communication service using the LLDP-MED framework.
Within the LLDP-MED Endpoint Device category, the LLDP-MED scheme is broken
into further Endpoint Device Classes, as defined in the following.
Each LLDP-MED
Endpoint Device Class is defined to build upon the capabilities defined for the
previous Endpoint Device Class. For-example will any LLDP-MED Endpoint Device
claiming compliance as a Media Endpoint (Class II) also support all aspects of
TIA-1057 applicable to Generic Endpoints (Class I), and any LLDP-MED Endpoint
Device claiming compliance as a Communication Device (Class III) will also
support all aspects of TIA-1057 applicable to both Media Endpoints (Class II)
and Generic Endpoints (Class I).
LLDP-MED Generic Endpoint
(Class I)
The LLDP-MED
Generic Endpoint (Class I) definition is applicable to all endpoint products
that require the base LLDP discovery services defined in TIA-1057, however do
not support IP media or act as an end-user communication appliance. Such
devices may include (but are not limited to) IP Communication Controllers,
other communication related servers, or any device requiring basic services as
defined in TIA-1057.
Discovery services
defined in this class include LAN configuration, device location, network
policy, power management, and inventory management.
LLDP-MED Media Endpoint
(Class II)
The LLDP-MED
Generic Endpoint (Class I) definition is applicable to all endpoint products
that require the base LLDP discovery services defined in TIA-1057, however do
not support IP media or act as an end-user communication appliance. Such
devices may include (but are not limited to) IP Communication Controllers,
other communication related servers, or any device requiring basic services as
defined in TIA-1057.
Discovery services
defined in this class include LAN configuration, device location, network
policy, power management, and inventory management.
LLDP-MED Communication
Endpoint (Class III)
The LLDP-MED
Communication Endpoint (Class III) definition is applicable to all endpoint
products that act as end user communication appliances supporting IP media.
Capabilities include all of the capabilities defined for the previous Generic
Endpoint (Class I) and Media Endpoint (Class II) classes, and are extended to
include aspects related to end user devices. Example product categories
expected to adhere to this class include (but are not limited to) end user
communication appliances, such as IP Phones, PC-based softphones, or other
communication appliances that directly support the end user.
Discovery services
defined in this class include provision of location identifier (including ECS /
E911 information), embedded L2 switch support, inventory management.